PEI Chong, CHEN Hao, QIU Jiayu, et al. Microstructure and mechanical properties of IC10 alloy brazed joints by B-Ni55NbCoWCrAlSiMo(C)-S brazing filler metal[J]. Welding & Joining, 2025(5):27 − 31. DOI: 10.12073/j.hj.20240930003
Citation: PEI Chong, CHEN Hao, QIU Jiayu, et al. Microstructure and mechanical properties of IC10 alloy brazed joints by B-Ni55NbCoWCrAlSiMo(C)-S brazing filler metal[J]. Welding & Joining, 2025(5):27 − 31. DOI: 10.12073/j.hj.20240930003

Microstructure and mechanical properties of IC10 alloy brazed joints by B-Ni55NbCoWCrAlSiMo(C)-S brazing filler metal

  • Objective The aim was to study microstructure and mechanical properties of IC10 alloy brazed joints by B-Ni55NbCoWCrAlSiMo(C)-S brazing filler metal (B-Ni55 brazing filler metal). Methods Brazing experiments of IC10 superalloy were conducted by B-Ni55 brazing filler metal at brazing temperature of 1 225 ℃ for 30 min with different clearances, and microstructure and mechanical properties of brazed joints were analyzed. Results The results indicated that a strong interfacial reaction occurred between brazing filler metal and base metal during the brazing process. Complete brazed joints could still be formed even with a large clearance of 1.6 mm. Conclusion The average stress rupture life of brazed joints obtained at a clearance of 0.05 mm was 99.5 h under the condition of 980 ℃/75 MPa, and rupture life showed a decreasing trend with the increase of brazing clearance.
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